The CMMG 35A2C0ACT RESOLUTE MK4 350L 16.1 COY is a ranch-ready AR chambered in 350 Legend, built for dropping hogs and deer inside 200 yards without the hassle of a suppressor or special ammo. Per CMMG specs, this rifle uses their Mk4 upper and lower receivers with the EML handguard—a full-length aluminum tube with M-LOK slots on three sides and a continuous top picatinny rail. The ZEROED parts package includes an ambi safety, ambi mag catch, extended mag release, ambi charging handle, and a drop-in single-stage trigger. It ships with a CMMG 10-round magazine. Coyote brown Cerakote finish keeps glare off in tall grass.
| Manufacturer | CMMG |
|---|---|
| Model | RESOLUTE MK4 350L 16.1 COY |
| Material | 7075-T6 aluminum upper and lower receiver (per manufacturer specs) |
| Compatibility | 350 Legend ammunition; uses standard AR-15 lower parts and magazines |
| Finish | Coyote brown Cerakote |
| Weight | 6.8 lbs (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- ZEROED ambi controls — why it matters: you can run the bolt, safety, and mag release from either shoulder without shifting your grip. That matters when you’re shooting around a fence post or out of a side-by-side.
- EML handguard with full M-LOK — why it matters: three sides of M-LOK let you mount a light, bipod, or foregrip exactly where your hand naturally falls. The slots between the top rail sections give you flexibility without losing zero on your optics.
- Drop-in single-stage trigger — why it matters: it breaks clean at around 4.5 pounds with minimal creep. You get fast follow-up shots on running game without the mush of a mil-spec trigger.
- 16.1-inch barrel with muzzle brake — why it matters: the barrel length keeps velocity up for 350 Legend while staying maneuverable in brush. The brake cuts recoil noticeably, so you can spot your hits through the scope.
- Coyote brown Cerakote — why it matters: the finish resists scratches from barbed wire and rain, and the color blends with dry grass and dirt. No glare, no rust spots.
Who It’s For
This rifle is for the rancher who needs one gun for predator control, deer season, and truck gun duty. It’s not a competition race gun or a safe queen. If you spend more time fixing fence than shooting paper, the 350 Legend cartridge gives you straight-wall legality in states like Ohio, Indiana, and Michigan, with less recoil than a 450 Bushmaster. The ambi controls make it usable for left-handed shooters or anyone who shoots from awkward positions.
Pros and Cons
- Pro: Ambi everything—safety, charging handle, mag release, bolt catch. No aftermarket parts needed to make it lefty-friendly.
- Pro: 350 Legend is cheap to shoot. You can buy a box of 150-grain soft points for under $20 at most farm stores.
- Con: The 10-round magazine is fine for hunting but you’ll want a 15- or 20-rounder for predator calling. CMMG uses a proprietary mag well geometry, so standard AR-15 mags won’t work. You have to buy CMMG-specific 350 Legend magazines.
Comparison: CMMG RESOLUTE vs. Geissele Super Duty vs. Zev Technologies OZ9
| Feature | CMMG RESOLUTE MK4 350L | Geissele Super Duty 16″ 5.56 | Zev Technologies OZ9 (pistol) |
|---|---|---|---|
| Caliber | 350 Legend | 5.56 NATO | 9mm |
| Weight | 6.8 lbs | 7.1 lbs | 1.8 lbs (unloaded) |
| Trigger | Drop-in single-stage, ~4.5 lb | Geissele SSA-E two-stage, ~3.5 lb | Zev adjustable flat-face, ~4.0 lb |
| Handguard | EML M-LOK, 15″ | Geissele MK16 M-LOK, 15″ | Integrated polymer grip module |
| Ambi Controls | Full ambi (safety, charging handle, mag catch, bolt catch) | Ambi safety, charging handle only | Ambi slide stop, reversible mag release |
| Best For | Hunting, ranch work, straight-wall states | Duty/defense, precision shooting | Concealed carry, competition |
| Price | $1,537.60 | $1,899.00 | $1,499.00 |
Frequently Asked Questions
Does the CMMG 35A2C0ACT RESOLUTE MK4 350L 16.1 COY come with a case?
No, it ships in a cardboard box with the rifle, one 10-round CMMG 350 Legend magazine, and a cable lock. You’ll want to buy a soft case or hard case separately if you’re hauling it in a truck or ATV.
What is the barrel twist rate on this CMMG RESOLUTE 350 Legend?
Per CMMG specs, the barrel has a 1:16 twist rate. That’s ideal for stabilizing 150- to 180-grain bullets commonly used in 350 Legend hunting loads. It will not stabilize subsonic 250-grain bullets reliably.
Can I use standard AR-15 magazines with the CMMG 350 Legend?
No. The 350 Legend cartridge has a larger diameter case head than 5.56, so it requires dedicated 350 Legend magazines. CMMG’s mags are proprietary to their lower. Other brands like Magpul and Duramag make 350 Legend mags that may work, but you should test them for reliability.
Is the CMMG RESOLUTE legal for deer hunting in straight-wall states?
Yes. The 350 Legend is a straight-wall cartridge legal in Ohio, Indiana, Michigan, Iowa, and other states with straight-wall rifle restrictions. Always check your state’s minimum caliber and case length rules before hunting.
How accurate is the CMMG 350 Legend out of the box?
Expect 1.5 to 2 MOA with quality factory ammunition like Winchester Deer Season or Federal Fusion. The trigger helps, but the barrel is not a match-grade unit. It’s a hunting rifle, not a benchrest gun.
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Browse more AR Rifles or check out our Hunting Rifles and 10mm Pistols for ranch work.
Last updated: April 2026
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